Marissa Westerland, MD
NPI 1174137160 · Family Medicine Physician · Rohnert Park, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Westerland, MD is a Family Medicine Physician provider in Rohnert Park, CA (NPI 1174137160).
Provider details
- NPI number
- 1174137160
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 191052 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 32 | 15 |
| Lisinopril | 31 | 13 |
| Levothyroxine Sodium | 29 | 14 |
| Losartan Potassium | 28 | — |
| Lisinopril/Hydrochlorothiazidebrand: Lisinopril-Hydrochlorothiazide | 15 | — |
| Trazodone Hcl | 14 | — |
| Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-09-07
- Last updated
- 2025-09-24
- Certified
- 2025-09-24
Frequently asked questions
- What is Marissa Westerland's NPI number?
- Marissa Westerland's National Provider Identifier (NPI) is 1174137160, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Westerland's specialty?
- Marissa Westerland is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marissa Westerland located?
- Marissa Westerland's practice location on file with NPPES is 5900 State Farm Dr, Rohnert Park, CA 94928-2149.
- What is Marissa Westerland's phone number?
- The practice phone number listed in the NPPES registry for Marissa Westerland is (707) 206-3044.
- Does Marissa Westerland accept Medicare?
- Marissa Westerland is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Westerland's NPI active?
- Yes — Marissa Westerland's NPI (1174137160) is active in the NPPES registry as of the last update on 2025-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.